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| author |   Vladimir Zapolskiy <vzapolskiy@gmail.com> | 2010-06-24 17:38:50 +0400 |
|---|---|---|
| committer |   Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-06-25 12:29:01 +0100 |
| commit | cc3202f5da3c81a99c5f3a605df527da7a77eed3 (patch) | |
| tree | 6a403bacab904beea885f14f4c1ce8864316f579 /include/sound | |
| parent | ASoC: JZ4740: Add qi_lb60 board driver (diff) | |
| download | linux-dev-cc3202f5da3c81a99c5f3a605df527da7a77eed3.tar.xz linux-dev-cc3202f5da3c81a99c5f3a605df527da7a77eed3.zip | |
ASoC: uda134x: replace a macro with a value in platform struct.
This change wipes out a hardcoded macro, which enables codec bias
level control. Now is_powered_on_standby value shall be used instead.
Signed-off-by: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/uda134x.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/sound/uda134x.h b/include/sound/uda134x.h index 509efb050176..e475659bd3be 100644 --- a/include/sound/uda134x.h +++ b/include/sound/uda134x.h @@ -18,6 +18,18 @@ struct uda134x_platform_data { struct l3_pins l3; void (*power) (int); int model; + /* + ALSA SOC usually puts the device in standby mode when it's not used + for sometime. If you unset is_powered_on_standby the driver will + turn off the ADC/DAC when this callback is invoked and turn it back + on when needed. Unfortunately this will result in a very light bump + (it can be audible only with good earphones). If this bothers you + set is_powered_on_standby, you will have slightly higher power + consumption. Please note that sending the L3 command for ADC is + enough to make the bump, so it doesn't make difference if you + completely take off power from the codec. + */ + int is_powered_on_standby; #define UDA134X_UDA1340 1 #define UDA134X_UDA1341 2 #define UDA134X_UDA1344 3 |